Here is a solar-powered Stirling cycle engine that is ideal for demonstrating the direct conversion of solar heat into kinetic energy . The motor and reflector attach to a standard camera tripod. When aimed at the sun, solar energy is focused on the hot cap and is converted to mechanical energy turning the flywheel at about 2000 rpm. The engine has a 3/4 inch bore and the flywheel is 3 1/2 inch in diameter. The parabolic mirror is made of polished aluminum and is 18 inches in diameter. Each engine is test run at the factory. .
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